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Worksheet Chapter 15 (2008) - Worksheet Chapter 15 Define...

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Worksheet Chapter 15 Define the following: A. chemical equilibrium- B. law of mass action- C. Le Chatelier's principle- D. heterogeneous equilibria Solve the following: 1. What is a heterogeneous catalyst? ___________________________ 2. What is the equilibrium expression for the following reaction: 2A + 5B 3C ___________________ 3. What is the K p of the above reaction if the P A = 35 torrs, P B = 10 torrs, and P C = 0.56 torrs? ______________ 4. What is the equilibrium expressions for Kc and Kp for the following reaction? SnO 2(s) + 2CO (g) Sn (s) + 2CO 2(g) _____________________________, ___________________________ 5. What is the equilibrium constant for the above equation if the equilibrium concentrations are: [CO] = 3.4 M, [CO 2 ] = 2.1 x 10 -1 M _______________ 6. What is the direction of the equilibrium of Number 5? _________ 7. A mixture of 1.374 g of H 2 , and 70.31 g of Br 2 is heated in a
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2.00 L vessel at 700 K. These substances react as follows: H 2 (g) + Br 2 (g) 2HBr(g) At equilibrium the vessel is found to contain 0.566 g of H 2 . (a) Calculate the equilibrium concentrations of H 2 , Br 2 , and HBr. (b) Calculate K c .
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